📊 Barcode Generator

Barcodes can be generated by inputting text or numerical values; 6 types of barcodes are supported: Code128, Code39, EAN-13, EAN-8, UPC-A, and ITF. Customize colors and sizes, and PNG download and clipboard copy are available.

Usage and Application Examples

  • Create barcode labels for product management and inventory control
  • Generate JAN code (product code) in EAN-13 format
  • Encode data containing alphanumeric characters and symbols in Code128 format
  • Download the generated barcodes in PNG for printing and pasting

What is Barcode Generator?

Barcodes are machine-readable codes consisting of vertical lines and spaces that encode data into a format scanners can instantly interpret. A barcode generator tool lets you create professional barcodes from text or numbers without specialized software, essential for retail operations, inventory management, shipping, and ticketing systems. This free browser-based tool supports multiple barcode standards used globally.

How to Use

Start by entering your text or numeric data in the input field. Select your preferred barcode format from the supported types—Code128, Code39, EAN-13, EAN-8, UPC-A, or ITF. Customize appearance by adjusting colors for bars and background, though standard black-on-white is recommended for scanner compatibility. Click Generate to create your barcode. Preview the result to ensure it scans properly. Download the generated image in PNG or SVG format for printing or digital use.

Use Cases

Retail Store Labeling: Create product labels with EAN-13 barcodes for consistent scanning at checkout—faster transactions and reduced errors.
Inventory Management: Generate barcodes for warehouse shelves, bins, and items to track stock levels automatically and prevent inventory discrepancies.
Event Ticketing: Produce unique barcodes for concert or conference tickets, allowing quick entry validation without manual checking.
Shipping and Logistics: Create tracking barcodes for packages that carriers can scan at each delivery checkpoint.
Small Business Labeling: Generate barcodes for products you sell online or locally, creating professional packaging without expensive printing services.

Tips & Insights

Code128 is the most versatile format, handling full ASCII characters and used widely in logistics. EAN-13 is the global standard for retail products, required by major retailers. Ensure adequate quiet zones (white space) around barcodes for reliable scanning—most scanners need at least 10% white space. Higher-resolution downloads prevent pixelation when printing. Always test-scan generated barcodes before mass production to catch compatibility issues with your specific scanners.

Frequently Asked Questions

What is a barcode generator?

This tool can generate barcode images in various formats by entering text or numerical values, and supports six types of barcodes: Code128, Code39, EAN-13, EAN-8, UPC-A, and ITF.

Which barcode format should I choose?

Code128 is recommended for general use. It can encode alphanumeric characters and symbols in a compact format. EAN-13 is used for JAN codes for products, EAN-13 for ISBNs for books, and UPC-A for North American products.

Can the generated barcodes be read by a scanner?

Yes, if the correct data is entered and output in a large enough size, it can be read by common barcode scanners and smartphone barcode reader apps.

Is the check digit for EAN-13 automatically calculated?

Yes, for EAN-13, EAN-8, and UPC-A, check digits are automatically calculated and added from the entered digits. 12 digits (EAN-13), 7 digits (EAN-8), and 11 digits (UPC-A) must be entered.

Can the barcode color or size be changed?

Yes, barcode line color and background color can be freely changed using the color picker. Also, bar width magnification and barcode height can be adjusted.

How can I save the generated barcodes?

The "Download as PNG" button allows you to download the image as a PNG image. You can also use the "Copy to Clipboard" button to copy the image and paste it directly into other applications.

What is the difference between Code128, Code39, EAN-13, and UPC-A barcodes?

Code128 and Code39 are alphanumeric formats used for general-purpose labeling with varying capacity. EAN-13 is the standard for retail products in Europe and Asia, while UPC-A is the North American equivalent. Choose based on your region and application: EAN-13/UPC-A for retail, Code128 for shipping labels, and Code39 for inventory management.

What are the character limitations for each barcode type?

Code39 supports alphanumeric characters and some symbols (A-Z, 0-9, space, and special characters). Code128 supports the full ASCII character set. EAN-13 and UPC-A accept only numbers—EAN-13 uses 13 digits and UPC-A uses 12 digits (the check digit is auto-calculated). ITF supports numbers only with a minimum of 6 digits.

Can I resize the barcode without losing quality?

The generated barcodes are vector-based and can be scaled to any size without losing quality or readability. However, ensure the scaled barcode maintains a minimum width (typically 0.5 inches or 13mm) for reliable scanning. Most scanners can read barcodes from small prints to large signage, as long as the bar width and spacing proportions are maintained.

Can I generate multiple barcodes at once?

This tool generates one barcode per submission. For bulk barcode generation, you can repeat the process for each item or use a batch processing tool. If you need hundreds of unique barcodes, exporting the data and using a bulk generator script may be more efficient than manual entry.

What happens if I enter invalid data for a barcode format?

The tool validates your input and displays an error message if it doesn't match the selected format requirements. For example, EAN-13 requires exactly 13 digits, or Code39 rejects unsupported special characters. Follow the on-screen guidance to correct your input and successfully generate the barcode.

Can I customize the barcode appearance beyond color and size?

This tool allows you to change the barcode and background colors and adjust the size and aspect ratio. Advanced customization like bar width variation, quiet zone (margin) adjustment, and label text integration are not available in this tool. For complex barcode customization, consider professional barcode design software or a more advanced online generator.